Fertilizer grinder and separator.



No. 67e,|75. Patented lune 190|.

n. z. cLAv. FRTILIZER GRINDER AND SEPA'RATUR.

(Application led Augu- 9,1898.) l (No Model.) 3 Sheets-Sheet 2.

www l mfz. a@

. Y I i I l Tm; noms vcrzns ca. mio-ro-Lmao.. wssnmumu. raA a No. 676,I75. 4 Patented lune Il. |90l. D. Z. CLAY.

FERTILIZEB GRINDEB AND SEPARATOR. (Appliczion med Aug 9, 189s.) (No Model.) 3 Sheets-Sheet 3.

awww/fon -r U i@ j Gnome/1;

UNITED STATES PATENT OFFICE'.

DAVID z. CLAY, oFEAsT HANOVER, VPENNSYLVANIA.

FERTILIZER GRINDER AND SEPARATOR.

SPECIFICATION forming part of `Letters raten No. 676,175, cated June 1i, 1901.

Application filed August 9,

T0 @ZZ whom, t may concern:

Be it known that I, DAVID Z. CLAY, a resident of East Hanover, in the county of Lebanon and State of Pennsylvania, have invented certain new and useful Improvements inFertilizer Grinders and Separators 5 and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to an improvement in fertilizer grinders and separators. g

One object of the invention resides in the peculiar construction of the grinding-cylinders to enable them to more effectively handle the material.

Another object is to so construct the machine that all material not `ground to the proper iin'eness is automatically returned to the grinding-cylinders.

Another object is to simplify the construction and cheapen the cost of manufacture ofthe machine, so as toadapt it for the individual use of farmers or'the like.

Other objects will be apparent from the combination of parts and constructions-of details first to be described in connection with the accompanying drawings and then pointed out inthe claims.

Figure l of thedrawings is a side elevation of my improved machine. Fig. 2 is a longitudinal vertical section of the same. Fig. 3 is a plan of the machine. Fig. 4 is a rear elevation of :the machine. Fig. 5 is auv elevation of'one of the movable burs. Fig. 6 is an elevation of the lower grinding-cylinder. Fig. 7 `is a perspective View of the feeder for the lower grinding-cylinder.

Referring to thedrawings, A represents the framework of the machine, comprising the usual uprights and cross-pieces suitably conon the circumference of which is'secured a series of metal strips 3. These strips are arranged in two parallel rows, each strip extending froin the end of the cylinder inward 1898. semina 688,197. (Nomad.)

`past its center,wthe strips of each row being alternately `arranged with respect to those of the other row. Intermediate these parallel strips are arranged rows of strips diagonally situated with regard to the parallel strips, the diagonal strips of one row having an opposite inclination from those of the other row, all as clearly shown in Fig. 3. The strips are formed with a cutting edge at 4, the opposite edge sloping downward and secured to the roller bysuitable screws passed through said sloping surface, as clearly shown in the drawings.

The material is fed to and discharged from the grinding-cylinders in a circumferential direction, and the bars or strips 3 have suiicient inclination, as indicated, to direct the material toward the longitudinal center of the cylinder, where they terminate, a space being left for the material to pass by the ends of said stri ps in a circumferential direction. The overlapping bars parallel to the axis of cylinderC prevent the material passing immediately by the succeeding inclined the end of the `preceding adjacent inclined bar may be spread laterally to a limited exftent. The object of this combination of bars is to oppose the tendency of the material to work out toward Vthe ends of the cylinder and at the Sametime to aidsuch tendency by the parallel bars sufiiciently to prevent clogging at theinner ends Vof the inclined bars-that is, along approximately central lines of the cylinder circumference.`

D represents what VI term a bur, being concave on its inner surface to conform to the shape ofthe cylinder C and provided on said concave4 surface with a metal plate 5, formed with a series of diagonal grooves, as shown in Fig. 5. -This bur `is longitudinally adjustable through horizontal slide-bars 6, which pass through and are supported by openings 7, formed in a portion of the framework. screw-threaded rod 8, secured to the bur and suitably seated in a screw-threaded bearing 9 in the framework permits the accurate adj ustm'ent of the bur with relation to the grind` ing-cylinder C. 1

Immediately beneath the cylinder C is supported a sieve E of fine mesh at its inner end and comparatively coarser mesh at its outer bar and provide that material passed about end. Beneath the outer end of the sieve I secure a. downwardly-sloping vchute 10, and beneath the forward end of the sieve I position a downwardly-sloping chute F. The lower end of the chute is provided with a hinge-gate 11, controlled by a latch 12, the handle of which projects through an opening 13 in the frame of the upper grinding-cylinder, as clearly shown in Fig. 2. The latch 12 is weighted, so that when operated to open gate 11 it will by means of its weight maintain said gate in any position in which it may be placed, permitting only the desired quark tity of material to pass the gate.

Beneath the lower end of the chute F is secured acasing 14, within which is mounted a second grinding-cylinder G, bearing o-n its -p-heryaseries of diagonal-ly-g-rooved metal plates 15, separated from each other by narrow-blank strips of wood or metal 16. The concave b-ur for this cylinder is similar in construction to bur D, having forwardly-extending slides 17 and screw-rod 1S to permit its longitudinaladj ust-ment. The oppositelymaterial slightly back and forth lengthwise the cylinder, and the intermediate smooth Y parts 16 obviate clogging which might follow cylinder G, I securea second sieve I of fine mesh at its inner end and coarse mesh at its outerend, and beneath the sieve, at its inner end, is al chute 19 to discharge finished mate-4 rial iintoa receptacle, a chute20` being located beneath the sieve at its outer end to convey desiredmaterial to elevators. The frame carrying the lower sieve is movably swung from the main frame by straps 21, the rear wall 22 orfthe sieve-frame extending upward and being-connected to the vchute F, as shown. innerend of chute F is connected to the sievefram'eE by a knuckle-joint 23, a plate 24 preventing the accidental separation of the parts. A brace 25 connects the rear wall 22 of the lowersieve-frame with the bottom of chute F,

and the forward end of said chute is supported on arounded projection 26', extending from the main frame. The chute F does not ex- Y Secured thereto a removable plate 26 of such length as` to terminate directly above the grinding-cylinder F. By this construction it will-'be seen that, if desired, the contents of chuteF mayby removing plate 26 bedirectcilentosieve I without passing through the grinding-cylinder G. j

2f? represents the main gear-wheel, in mesh with the smaller gear-wheel 2S, mounted-on theshaft` on which the grinding-cylinder C is I secured'. On this shaft, at the opposite end from gear-wheel 28,*is( mounted abelt-rollern v` 29, vfrom` which across-belt; leads to. a. roller 30, mountedon theshaft ofv the lower grinding-cylinder G, and .on the vopposite end of from the upper-grinding-cylinder shaft.

. this shaft ismounted a large belt-wheel31, to

be utilizedwhen drivingv the. machine with power.

O and O represent, respectively, an upper and lower elevator suitably driven by belts 32, leading from belt-pulleys fixed on the shaft of the upper grinding-cylinder.

These elevators serve to receive material from the conveyors 10 and 20 and carry the same upward and discharge it into hopper B and into casing 14 to be reground, as will be fully evi- 1 dent from the drawings.

s In the lower part of framework A is journaled a shaft 33, driven by a belt 34,1eadig n the inner end of this shaft 33 is `mounted a disk 35, to which is eccentricallypi-voteda rod 3b', leading forward and p-i'voted to the rear 5 wall of the lower sieve-frame.

struction when the machine is being operated f a reciprocating motion will be imparted tothe two sieve-frames, chutes, and conveyers,causing these parts to effectively perform the service desired.

inclined grooves in plates 15 act to move the By this con- I have constructed a fertilizer-grinder par- 4ticularly adapted for the work described. The nature of the material to be grou-nd requires a dress of peculiar constructionl for 1 the grinding-cylinders in orde-r to effectually `grind the soft material without filling the grinding-corrugations, and, furthermore, the

duplication of the grinding-cylinders, with ftheir differently-constructed grinding-surfaces, will greatly increase` the efficiency of the machine, as the final grinding-cylinder is specially adapted to reduce the materialpassing the first cylinder, its peculiar grinding- `surface readily further reducing the oneeground soft material. l

Having thus described my in-vention, w hat I claim as new, and desire to secure byLetters Patent, is.- The j 1. In a fertilizer grinder and separator, a

l grinding-cylinder, a bur adjacent the cylinder and adjustable with relation theretosaid 3 bur having anoperative face comprising afsej riesof contiguous rows of diagonally-disposed `grooves, said rows beingparallel lengthwise the bur and the-grooves of eachrow disposed @oppositely to the grooves ofL the contiguous rows, substantially as described.

tend-quite to the grinding-cylinder G and has 2. In a fertilizer grinder and separator, a

grinding-cylinder, a bur adjacentl the cyliny der andadjustable with relation thereto, said ybur having an operativeface comprising` a series of contiguous rows of diagonally-dis- IOO los

IIO

series of contiguous rows of diagonal grooves, the grooves being alternately inclined in opposite direction with respect to the length of the rows, a screen having fine mesh at one end and coarse mesh at the other located beneath the cylinder, oppositely-inclined chutes beneath the screen and at opposite ends thereof, and means for simultaneously reciprocating the screen and chu tes in the operation of the machine.

4. In a fertilizer grinder and separator, a grinding-cylinder provided on its periphery with bars arranged in rows parallel to each other and to the cylinder-axis and alternately overlapping each other at their inner ends, bars arranged between said parallel bars and at an angle thereto, means for feeding material and a discharge-opening each situated midway the cylinder ends, substantially as described.

5. In a fertilizer grinder and separator, a grinding-cylinder provided on its surface with circumferential rows of bars parallel to each other and the cylinder-axis and projecting alternately inward beyond the median line of the cylinder-surface, and circumferential rows of oppositely-inclined bars of equal length and number in each row arranged alternately with the parallel bars, the

outer ends of the bars in both rows extend- 3o ing to the proximate end of the cylinder, substantially as described.

6. In a fertilizer grinder and separator, a grinding cylinder provided on its surface with rows of bars, the bars of each row be- 3 5 ing arranged alternately parallel and at an inclination to each other, the inclined bars of one row having a dierently-directed inclinanation from the inclined bars of the other row, and each bar extending to the proximate 4o end of the cylinder and means for feeding material midway between the cylinder ends, substantially as described.

7. In combination with a bur, a iinishing grinding-cylinder comprising series of rows 45 of grooves, said grooves being oppositely inclined and the adjacent rows separated by plain faces.

In testimony whereof I have signed this specification in the presence of two subscrib- 5o ing witnesses.

' DAVID Z. CLAY.

Witnesses:

AUGUSTUS FAsNAoHr, AMos D. CLAY. 

